From: Eric Dumazet <[email protected]>
Dmitry reported a struct pid leak detected by a syzkaller program.
Bug happens in unix_stream_recvmsg() when we break the loop when a
signal is pending, without properly releasing scm.
Fixes: b3ca9b02b007 ("net: fix multithreaded signal handling in unix recv
routines")
Reported-by: Dmitry Vyukov <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Rainer Weikusat <[email protected]>
---
net/unix/af_unix.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index c5bf5ef2bf89..49d5093eb055 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -2339,6 +2339,7 @@ again:
if (signal_pending(current)) {
err = sock_intr_errno(timeo);
+ scm_destroy(&scm);
goto out;
}
